Anyone can comment on a bug. Have a simpler test case? Does it
work for you on a different platform? Let us know!
Just going to say 'Me too!'? Don't clutter the database with that please
— but make sure to vote on the bug!

> This says, that the search stop at the position offset if the
> value is positiv and if the value is negativ it starts at
> strlen-offset.
Yes. And that is how the $offset parameter is supposed to work,
see the examples given for strrpos().
The German translation is correct, albeit somewhat clumsy.

> The wording is super confusing here.
After having reconsidered this issue in the meantime, I have to
agree. It appears to me that the original needs improvement, too.
Actually, the search always works backwards[1] (what might be
regarded as an implementation detail, but searching forwards for
the last occurance wouldn't make sense). Describing it this way,
might simplify the explanation. See also bug #50317.
Anyhow, related to bug #68010.
[1] <http://lxr.php.net/xref/PHP_5_6/ext/standard/string.c#1981>